A node agent SKU supported by the Batch service. The Batch node agent is a program that runs on each node in the
pool, and provides the command-and-control interface between the node and the Batch service. There are different
implementations of the node agent, known as SKUs, for different operating systems.

The definition of the user identity under which the task is run. On CloudServiceConfiguration pools, this user is
logged in with the INTERACTIVE flag. On Windows VirtualMachineConfiguration pools, this user is logged in with the
BATCH flag.